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- From: stillson@mitre.org (Ken Stillson)
- Subject: oracle on sparc 2: disk or cpu loading?
- Message-ID: <stillson.713716873@tsfsrv>
- Sender: news@linus.mitre.org (News Service)
- Nntp-Posting-Host: tsfsrv.mitre.org
- Organization: The MITRE Corporation
- Date: Thu, 13 Aug 1992 14:41:13 GMT
- Lines: 25
-
- I'm working on a Sparc 2 with a HUGE (multiple gigabyte) oracle system, and
- have decided that the system is too slow. However, we're not really sure
- how to tell whether the system is disk or CPU bound.
-
- I've been running "CPU", "DISK" and "LOAD" monitors, and keeping an eye on
- them as we perform normal operations. I find that DISK is almost always
- constant - buzzing around half way up on the "80" scale. The CPU tends to
- oscillate in messy sine waves, with the amplitude going from 0 to 100% (it
- is %, right? the scale says 100.) When multiple jobs are running, it does
- "peak out" at 100%, and lay flat there for a few seconds, but not for a
- significant part of the run. The LOAD meter does about as expected-
- changing slowly, going up and down with the number and complexity of tasks
- running in the background.
-
- So now we have to do decide whether to spend $30,000 on a Sparc 10, or who
- knows how much on replaced drives for our very large databases. Does anyone
- out there know how to interpret these performance meters, and whether they
- are reliable enough to make a multi-tens-of-thousands-of-dollars decision ?
-
- Thanks! Please respond by e-mail to stillson@mitre.org
- --
-
- panic: cannot read .signature file for stillson@mitre.org
- Abort, Retry, Ignore, Explode?
-
-